// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc.  All rights reserved.
// http://code.google.com/p/protobuf/
//
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// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
//     * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// Author: kenton@google.com (Kenton Varda)
//  Based on original Protocol Buffers design by
//  Sanjay Ghemawat, Jeff Dean, and others.

#include <stdio.h>
#include <google/protobuf/io/printer.h>
#include <google/protobuf/descriptor.pb.h>
#include <google/protobuf/stubs/strutil.h>
#include "protoserv/compiler/java/java_service_interface.h"
#include "protoserv/compiler/java/java_helpers.h"

namespace protoserv {
namespace compiler {
namespace java {

ServiceInterfaceGenerator::ServiceInterfaceGenerator(
      const ServiceDescriptor* descriptor)
  : descriptor_(descriptor) {}

ServiceInterfaceGenerator::~ServiceInterfaceGenerator() {}

void ServiceInterfaceGenerator::Generate(io::Printer* printer) {
  for (int j = 0; j < descriptor_->file()->message_type_count(); ++j) {
    for (int i = 0; i < descriptor_->file()->message_type(j)->extension_count(); ++i) {
      FieldDescriptorProto desc;
      descriptor_->file()->message_type(j)->extension(i)->CopyTo(&desc);
      printer->Print(desc.DebugString().c_str());
      printer->Print("\n");
    }
  }


  bool is_own_file = descriptor_->file()->options().java_multiple_files();
  map<string, string> vars;
  vars["classname"] = descriptor_->name();
  printer->Print(vars,
    "public interface $classname$ {\n");
  printer->Indent();

  for (int i = 0; i < descriptor_->method_count(); i++) {
    const MethodDescriptor* method = descriptor_->method(i);
    GenerateMethodSignature(printer, method);
    printer->Print("\n");
  }

  printer->Outdent();
  printer->Print("}\n");
}

void ServiceInterfaceGenerator::GenerateMethodSignature(
    io::Printer* printer,
    const MethodDescriptor* method) {
  map<string, string> vars;
  vars["method"] = UnderscoresToCamelCase(method);
  vars["input"] = ClassName(method->input_type());
  vars["output"] = ClassName(method->output_type());
  printer->Print(vars,
    "\n"
    "public void $method$(\n"
    "    com.googlecode.protoserv.RpcHandler rpc,\n"
    "    $input$ request,\n"
    "    $output$.Builder response);\n");
}

}  // namespace java
}  // namespace compiler
}  // namespace protoserv
